Sand-bar for molders&#39; flasks.



E. KRUEGER.

SAND BAR FOR MOLDERS FLASKS.

APPLICATION FILED JULY 1.1912.

Patented Sept. 28, 1915.

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asaoasa 21 I I 1 ."em li eiiqiijaiedaa Be a known thatrynamswjingeag aa citizen of the United States, and resident *of Milwaukee, in thecounty of fMilwaukee and Stateof Wiscon in,havegii tentednw and us rs I nprovenient'sfiii Sand-Bars lififolde'rg Flasks, ofj'which the folloiw gi -i 'b h ew ea companying vi ssi hiehe e at par 1 9 this specification. I This invention relatest'o molde clamping them firmly in their sitions. 1 Y1 It hasbeen the common practice to fasten of molders flasks by n'ailingtheiii inlplac the nails being driven through the waustr the flask section and through the wooden sand retaining bars themselves. This results in the destruction of the flask section and the sand retaining bars necessitating frequent renewal of parts.

It is the object of the present invention to dispense with such clamping means of a more or less permanent nature and substitute a temporary clamping means employing the use of wedges which serve to clamp the sand retaining bars in any position desired and are adapted for reengagement any number of times Without mutilation of parts.

Another object of the invention is to embody such clamping means as a part of the sand retaining bar in such a manner that it may be formed integral therewith at a single casting of metal only requiring the separate wedges to cooperate therewith.

With the above and other objects in view the invention consists in the molders flask as herein claimed and all equivalents.

Referring to the accompanying drawings in which like characters of reference indicate the sameparts in the different views: Figure 1 is a paln View of a molders flask provided with sand bars in accordance with this invention; Fig. 2'is a sectional view thereof on the plane of line 22' with the longitudinal bars omittedyFig. 3 is a perspective view of one of the sand'bars; and Fig. 4 is a corner connection for flasks showing a modification of the connecting means.

In these drawings 10 indicates the cope member of a molders flask made up of Specification of LettersPatent.

shun-nan non nonnnns 'FLASKLS;

@Fatented S ept. "we ates; 7 i

g th retainin gfbafs. l of this inn a plied j thereto. Such. sandietaind from one side member. of the g bars cbnnectingjtheni as usual, but titre of this invention consists in the eans which the sand retains secured "to the flask sectionfor to ferably perforated and. serrated edgeas shown and as isixsiial sand retaining. bars, but at its it sfprovide d witlif hook members 12 ieet s'. f ange 13 posit positioned, at an angle with "relatlon 'to' e ach "other" to form a 131F9 sand .letaining bars withinit h i c p il a ua b tw en h m thro which I sjide'piece' of the flask section 10 passes. The flanges 13 are set back from the walls of the opening of the hook 12 so that wedges 14 may he slipped between said flanges and the inner and outer walls of the side pieces of the flask section 10 and serve, when driven into place, to firmly clamp the sand retaining bar to the flask section. Each of the sand retaining bars'has such a e other, and have other sand bars. f Eachf'sand retaining e Pi s and ndlri e u ual "and rclamping engagement at both ends with the side pieces of the flask section to form a rigid brace extending across the flask section and, as its engagement with the. side pieces of the flask section is merely the frictional engagement of the wedges it is obvious that such engagement may be made wherever desired and thus the sand retaining bar may be shifted or adjusted from one position to another without the necessity for driving nails or otherwise defacing the flask sections. The sand retaining bars which are not lengthwise of the flask section are identical with the others and engage the others instead of the walls of the flask as clearly shown in Fig. 1. They are likewise sand retaining bars makes it necessary to substitute other longitudinal sand, retaining bars of different length, a limited adjust-' j ment of the cross bars may be permitted without such substitution owing to the sand retaining bars being narrower. than the openring of the hook portion, permitting a shifting of the position of the-wedges to allow 7 Copies of'this patent may be obtained for.

such change. I

In Fig. 4; is shown a modified form'of corner connection which may be employed either for connecting sand retaining bars to each other or to the side pieces of the flask section or which may be employed for fas tening together the side and end pieces of the flask sections themselves. In this con struction a plate 15 bears against theinner face of one connected member 16 and hasa flange 17 against which the other-connected member 18 bears while abutting its'jend against the said plate, there being another flange 19 extending from the plate parallel lengthwise withthe flange 17 but inclined strip 22 and the connected member 16 serves a to tightly clamp'the plate 15 on the connect- 7 I The plate 1511318 an arm 21 ed member 16 and thus complete the corner is connect-ion.

What-I claim as new and desire to secure by Letters Patent is:

- 1. A-sandretaining bar for flasks provided with hooks at its ends to receive the side pieces of a flask section, flanges projecting from the hookmembers on opposite sides of the openings thereof and at an angle with relation to each other, and wedge blocks fit- ,tingbetween theflanges andthe side pieces of the-flask. v

721A sand' retaining bar for molders ,fiasks, comprising a bar member provided with flanged hook-like ends, the flanges on opposite sides of the openings of the booklike ends being converging with relation to each other, and'wedge blocks for fitting between the flanges and the part engaged by the hook-like ends. I

In testimony whereoffI aifix my signature,-in presenceoftwo witnesses.

- ERNEST'KRUEGERQ Witnesseszg KATHERINE HOLT,

CLARA MIJ'EHIBACH.

five cents each, by ad dressing -the Commissioner of Patents, Washington; D. 0. V 7' 

